G11B 3/445 — IPC vs CPC Diff | Patent Classification Explorer

DIFF Subgroup

G11B 3/445

Full Title

Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor (G11B11/00, take precedence) > Styli, e.g. sapphire, diamond

This code exists only in CPC.

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